Question

(k+4)x^2+(k+1)x+1=0 find the unknown if roots are real and equal

Answer 1

Answer:

5,-3

Step-by-step explanation:

If roots are real and equal then

D=0

b²=4ac

(k+1)²=4(k+4)(1)

k²+1+2k=4k+16

k²-2k-15=0

k=5,-3